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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20/2/2016 - 20/2/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Principles of method if other than guideline:
The boiling point determination of Test item was done as per the test guideline OECD 103. The method followed was according to Siwoloboff.
GLP compliance:
no
Type of method:
method according to Siwoloboff
Specific details on test material used for the study:
- Name of test material : 5-methoxy-1,3-dihydro-2H-benzimidazole-2-thione
- Molecular formula : C8H8N2OS
- Molecular weight : 180.2302 g/mol
- Smiles notation : COc1ccc2c(c1)nc([nH]2)S
- InChl : 1S/C8H8N2OS/c1-11-5-2-3-6-7(4-5)10-8(12)9-6/h2-4H,1H3,(H2,9,10,12)
- Substance type : Organic
- Physical state : Solid
Key result
Boiling pt.:
> 250 °C
Atm. press.:
979 hPa
Decomposition:
no
Remarks on result:
other: Other details not available

TEST DESCRIPTION AND RESULT

Method Details

Observations 

Remarks if, any

Guideline

OECD 103

 

 

Method

Method according to Siwoloboff

 

 

Principle of Boiling point test

A sample is heated gradually in a tube which is immersed in a liquid bath. The sample tube is held in close contact with a thermometer and it contains a boiling capillary which is fused about1 cm above its lower end. Upon approach of the boiling temperature bubbles emerge rapidly from the lower open end of the capillary. The boiling temperature is that temperature at which, on momentary cooling, the string of bubbles stops and liquid suddenly rises in the capillary.

 

 

Quantity of chemical used

g

1 g

 

Nature of the Bath taken

·    Oil bath

·    Water bath

Oil bath

 

 

If oil bath is used, specify

·    Liquid paraffin

·    Silicone oil

Silicone oil

 

Atmospheric pressure

hPa

979.0 hPa

 

Decomposition

Decomposition temperature (°C), if applicable

·                    Yes

·                    No

No

 

 Mean Boiling point (°C) (RESULT)

°C

Greater than 250 °C

 

Boiling point range, if applicable

°C

-------

 

 

Conclusions:
The boiling point determination of Test item was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The mean boiling point was determine to greater than 250°C at 979.0 hPa.
Executive summary:

The boiling point determination of Test item was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The mean boiling point was determine to greater than 250°C at 979.0 hPa.

Description of key information

The boiling point determination of Test item was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The mean boiling point was determine to greater than 250°C at 979.0 hPa.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
250 °C

Additional information

The boiling point determination of Test item was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The mean boiling point was determine to greater than 250°C at 979.0 hPa.